Pinpoint Test DK: Accelerator Pedal Position (App) Sensor: Introduction

WARNING: TO PREVENT THE RISK OF HIGH-VOLTAGE SHOCK, ALWAYS FOLLOW PRECISELY ALL WARNINGS AND SERVICE INSTRUCTIONS, INCLUDING INSTRUCTIONS TO DEPOWER THE SYSTEM. THE HIGH-VOLTAGE SYSTEM UTILIZES APPROXIMATELY 300 VOLTS DC, PROVIDED THROUGH HIGH-VOLTAGE CABLES TO ITS COMPONENTS AND MODULES. THE HIGH-VOLTAGE CABLES AND WIRING ARE IDENTIFIED BY ORANGE HARNESS TAPE OR ORANGE WIRE COVERING. ALL HIGH-VOLTAGE COMPONENTS ARE MARKED WITH HIGH-VOLTAGE WARNING LABELS WITH A HIGH-VOLTAGE SYMBOL. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH.

NOTE: After clearing an APP sensor diagnostic trouble code (DTC) to verify a repair or an intermittent concern, apply the accelerator pedal before carrying out the self-test. Take 10 seconds to carry out a full sweep of the accelerator pedal from fully released to fully applied and back to fully released.

This pinpoint test is intended to diagnose the following:

APP sensor (9F836)
harness circuits: APP1, APP2, APPRTN1, APPRTN2, APPVREF1, and APPVREF2
powertrain control module (PCM) (12A650)

Fig 1: Identifying Accelerator Pedal Position Sensor Connector Terminals
Courtesy of FORD MOTOR CO.

Pin	Circuit
5	APP2 (Accelerator Pedal Position 2)
2	APP1 (Accelerator Pedal Position 1)
4	APPRTN2 (Accelerator Pedal Position Return 2)
6	APPVREF2 (Accelerator Pedal Position Reference Voltage 2)
3	APPRTN1 (Accelerator Pedal Position Return 1)
1	APPVREF1 (Accelerator Pedal Position Reference Voltage 1)

Fig 2: Identifying Powertrain Control Module Connector Terminals

Courtesy of FORD MOTOR CO.

Pin	Circuit
B29	APP2 (Accelerator Pedal Position 2)
B30	APP1 (Accelerator Pedal Position 1)